Details

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BUY AD7840JNZ https://www.utsource.net/itm/p/696768.html
LC2MOS Complete 14-Bit DAC

Parameter	Symbol	Conditions	Min	Typ	Max	Units
Supply Voltage	VDD	Operating Range	4.5	-	5.5	V
Analog Input Voltage	VIN	Range	0	-	VREF	V
Reference Voltage	VREF	Range	2.5	-	5.0	V
Digital Output Codes	N/A	Resolution	-	12-bit	-	-
Conversion Time	tCONV	Single Conversion	-	13.5	-	μs
Power Consumption	IDD	Active Mode	-	2.5	-	mA
Power Consumption	IDD	Power-Down Mode	-	100	-	μA
Temperature Range	Toper	Operating	-40	-	85	°C
Package Type	N/A	-	-	DIP-16	-	-

Instructions for Using AD7840JNZ

1. Power Supply:

   • Connect the VDD pin to a 4.5V to 5.5V power supply.
   • Ensure a stable power supply to avoid noise and errors.

2. Reference Voltage:

   • Connect the VREF pin to a reference voltage between 2.5V and 5.0V.
   • The reference voltage determines the full-scale range of the analog input.

3. Analog Input:

   • Connect the analog signal to the VIN pins.
   • Ensure the input voltage is within the range of 0V to VREF.

4. Digital Interface:

   • Use the SPI (Serial Peripheral Interface) to communicate with the AD7840JNZ.
   • The SPI interface includes the following pins:
     • SCLK (Serial Clock)
     • DIN (Data In)
     • DOUT (Data Out)
     • CS (Chip Select)

5. Conversion Start:

   • To start a conversion, bring the CS pin low and send the start command via DIN.
   • The start command typically consists of a specific sequence of bits.

6. Reading Data:

   • After the conversion time (13.5 μs), the converted data will be available on the DOUT pin.
   • Read the 12-bit digital output by clocking the data out using the SCLK.

7. Power-Down Mode:

   • To enter power-down mode, set the appropriate control bit in the configuration register.
   • This reduces power consumption to approximately 100 μA.

8. Temperature Considerations:

   • Ensure the operating temperature is within the range of -40°C to 85°C.
   • Exceeding this range can affect performance and reliability.

9. Package Handling:

   • Handle the DIP-16 package carefully to avoid damage to the pins and internal components.
   • Follow proper ESD (Electrostatic Discharge) precautions during handling and installation.

By following these instructions, you can effectively use the AD7840JNZ in your analog-to-digital conversion applications.

(For reference only)